1. A method of establishing a call in a wireless network, comprising:
sending a request for a packet-switched call over the wireless network;
communicating control signaling in a traffic channel of the wireless network to establish the packet-switched call; and
retrieving a pre-assigned code to send in the request,
wherein retrieving the pre-assigned code comprises retrieving a random access channel mobile station code.
2. A method of establishing a call in a wireless network, comprising:
sending a request for a packet-switched call over the wireless network; and
communicating control signaling in a traffic channel of the wireless network to establish the packet-switched call,
wherein communicating the control signaling comprises communicating the control signaling in a packet data traffic channel mapped to a dedicated physical channel.
3. The method of claim 2, further comprising communicating bearer traffic in another traffic channel mapped to the dedicated physical channel.
4. The method of claim 3, wherein communicating the control signaling comprises communicating the control signaling in a PDTCH, and wherein communicating the bearer traffic comprises communicating the bearer traffic in a TCH, the PDTCH and TCH defined according to an Enhanced General Packet Radio Services protocol.
5. A method of establishing a call in a wireless network, comprising:
sending a request in a random access channel for a packet-switched call over the wireless network; and
communicating control signaling in a traffic channel of the wireless network to establish the packet-switched call,
wherein communicating the control signaling comprises communicating Session Initiation Protocol messages in the traffic channel.
6. The method of claim 5, wherein sending the request comprises sending a predefined code in the random access channel of an Enhanced General Packet Radio Services system.
7. The method of claim 6, wherein sending the code comprises sending the code in a channel selected from the group consisting of a RACH, PRACH, and CPRACH.
8. The method of claim 5, wherein communicating the control signaling comprises communicating the control signaling in a packet data traffic channel.
9. The method of claim 8, wherein communicating the control signaling comprises communicating the control signaling in PDTCH bursts of an Enhanced General Packet Radio Services system.
10. The method of claim 5, wherein communicating the control signaling comprises communicating a Session Initiation Protocol Invite request in the traffic channel.
11. A method of establishing a call in a wireless network, comprising:
sending a request in a random access channel for a packet-switched call over the wireless network;
communicating control signaling in a traffic channel of the wireless network to establish the packet-switched call; and
sending a release message to terminate the packet-switched call in a traffic channel,
wherein sending the release message comprises sending a Session Initiation Protocol Bye message in the traffic channel.
12. A method of establishing a call in a wireless network, comprising:
sending a request for a packet-switched call over the wireless network;
communicating control signaling in a traffic channel of the wireless network to establish the packet-switched call; and
sending quality-of-service related messages in a traffic channel,
wherein sending the quality-of-service related messages comprises sending Resource Reservation Protocol messages.
13. A method of establishing a call in a wireless network, comprising:
sending a request for a packet-switched call over the wireless network; and
communicating control signaling in a traffic channel of the wireless network to establish the packet-switched call,
wherein communicating the control signaling comprises communicating Session Initiation Protocol messages in the traffic channel,
wherein communicating the control signaling comprises communicating the control signaling in PDTCH bursts, the method further comprising communicating bearer traffic in TCH bursts.
14. A method of establishing a call in a wireless network, comprising:
sending a request for a packet-switched call over the wireless network; and
communicating control signaling in a traffic channel of the wireless network to establish the packet-switched call,
wherein communicating the control signaling comprises communicating Session Initiation Protocol messages in the traffic channel,
wherein communicating the control signaling comprises communicating the control signaling in PDTCH bursts, the method further comprising communicating bearer traffic in PDTCH bursts.
15. An article comprising one or more storage media containing instructions that when executed cause a controller to:
send control signaling to request a channel for a packet-switched call over a wireless network;
add a predetermined code into the control signaling to identify the call as a packet-switched call; and
communicate packet-switched call control signaling in traffic channels of the wireless network,
wherein the instructions when executed cause the controller to communicate the packet-switched call control signaling by communicating Session Initiation Protocol messages in traffic channels of the wireless network.
16. The article of claim 15, wherein the instructions when executed cause the controller to send the control signaling selected from the group consisting of RACH, PRACH, and CPRACH.
17. The article of claim 15, wherein the instructions when executed cause the controller to communicate the Session Initiation Protocol messages in PDTCH bursts of a General Packet Radio Services system.
18. The article of claim 15, wherein the instructions when executed cause the controller to communicate a Session Initiation Protocol Invite message.
19. The article of claim 18, wherein the instructions when executed cause the controller to receive response messages to the Invite message.
20. The article of claim 15, wherein the instructions when executed cause the controller to communicate a Session Initiation Protocol Bye message to release a call.
21. The article of claim 15, wherein the instructions when executed cause the controller to communicate messages to provide a supplementary service.
22. A mobile station for use in a wireless communications system having base stations, comprising:
a storage element storing a predetermined code associated with packet-switched calls; and
a controller to send control signaling to one of the base stations over a wireless link to set up a packet-switched call,
the control signaling containing the predetermined code, the predetermined code to identify the call as a packet-switched call,
wherein the control signaling comprises a random access channel, the random access channel containing the predetermined code,
wherein the random access channel comprises a packet random access channel, the packet random access channel containing the predetermined code.
23. The mobile station of claim 22, wherein the packet random access channel comprises a COMPACT packet random access channel, the COMPACT packet random access channel containing the predetermined code.
24. A radio network control system, comprising:
an interface to a wireless link capable of communicating with a mobile station; and
a controller adapted to receive a request to set up a packet-switched call over the wireless link,
the controller further adapted to assign a logical channel combination in response to the request,
wherein the logical channel combination comprises TCH+FACCH+SACCH+PDTCH+PACCH+PTCCH.
25. The radio network control system of claim 24, wherein the controller is adapted to communicate Session Initiation Protocol messages in PDTCH bursts.
26. The radio network control system of claim 24, wherein the controller is adapted to communicate a success indication of a packet-switched call session in a PACCH burst.
27. The radio network control system of claim 24, wherein the controller is adapted to communicate radio resource management signaling in a PACCH burst to indicate a state of the packet-switched call.
28. A data signal embodied in a carrier wave and containing instructions that when executed cause a system in a wireless network to:
receive control signaling to set up a packet-switched call over the wireless network, the control signaling carried in a first traffic channel;
establish the packet-switched call over the wireless network; and
communicate bearer data in a second traffic channel.
29. The data signal of claim 28, wherein the control signaling is carried in a PDTCH and the bearer data is carried in a TCH.
30. The data signal of claim 28, wherein receiving the control signaling comprises receiving a Session Initiation Protocol message carried in the first traffic channel.
31. An article comprising one or more storage media containing instructions that when executed cause a controller to:
send control signaling to request a channel for a packet-switched call over a wireless network;
add a predetermined code into the control signaling to identify the call as a packet-switched call; and
communicate packet-switched call control signaling in traffic channels of the wireless network,
wherein the instructions when executed cause the controller to send the control signaling selected from the group consisting of RACH, PRACH, and CPRACH,
wherein the predetermined code comprises a mobile station code.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A system for outputting a signal, comprising:
at least one memory element configured to store a value of a component in a Taylor series expansion;
a parallel to serial converter configured to convert an output of the at least one memory element to a serial bitstream output for transmission;
a serial to parallel converter configured to convert the serial bitstream output into a parallel bitstream output; and
an adder configured to combine the parallel bitstream output from the at least one memory element to form a signal output.
2. The system of claim 1, further comprising a digital-to-analog converter (DAC) configured to convert the signal output to an analog output signal.
3. The system of claim 1, further comprising a low pass filter configured to filter the analog output signal.
4. The system of claim 1, wherein the one or more memory elements include read-only-memories (ROMs).
5. The system of claim 2, further comprising an output register configured to:
receive components of the Taylor series expansion from the adder, and
pass the components of the Taylor series expansion to the DAC.
6. The system of claim 1, further comprising a register configured to couple to the at least one memory element to buffer outputs of the at least one memory element to provide the outputs to the adder at substantially the same time.
7. The system of claim 1, further comprising a phase accumulator configured to generate digital waveforms by incrementing a phase counter based on an external clock frequency.
8. The system of claim 7, wherein the phase accumulator is further configured to output the digital waveforms in binary form to the at least one memory element.
9. The system of claim 8,
wherein the digital waveforms are divided into upper bits and lower bits, and
wherein a value of the upper bits (u) and a value of the lower bits (p-u) are used as addresses to look up phase values in the at least one memory element.
10. The system of claim 1, wherein an output of the adder includes:
sin
\ue8a0
(
\u03c0
2
\ue89e
u
)
+
1
4
\ue89e
k
1
\ue8a0
(
(
P
–
u
)
+
cos
\ue8a0
(
\u03c0
2
\ue89e
u
)
)
2
–
1
4
\ue89e
k
1
\ue8a0
(
(
P
–
u
)
–
cos
\ue8a0
(
\u03c0
2
\ue89e
u
)
)
2
–
1
2
\ue89e
k
2
\ue8a0
(
P
–
u
)
2
\ue89e
sin
\ue8a0
(
\u03c0
2
\ue89e
u
)
,
wherein k1 and k2 are constants.
11. The system of claim 1, wherein the at least one memory element is further configured to store values including:
sin
\ue8a0
(
\u03c0
2
\ue89e
u
)
,
\ue89e
1
4
\ue89e
k
1
\ue8a0
(
(
P
–
u
)
+
cos
\ue8a0
(
\u03c0
2
\ue89e
u
)
)
2
,
\ue89e
1
4
\ue89e
k
1
\ue8a0
(
(
P
–
u
)
–
cos
\ue8a0
(
\u03c0
2
\ue89e
u
)
)
2
,
and
\ue89e
–
1
2
\ue89e
k
2
\ue8a0
(
P
–
u
)
2
\ue89e
sin
\ue8a0
(
\u03c0
2
\ue89e
u
)
,
wherein k1 and k2 are constants.
12. The system of claim 1, wherein the adder includes a compressor that receives the output from the at least one memory element and performs a bitwise addition of the output of the at least one memory element.
13. The system of claim 1, wherein the at least one memory element includes different sizes, wherein the at least one memory element that includes a fine resolution size are configured to receive a clock inactive signal to operate in a low power mode.
14. The system of claim 2, wherein the DAC includes a first order hold interpolation (FOHI) DAC including a current analog output signal dependent upon a previous sample of a digital input signal and a current digital input sample.
15. The system of claim 1, wherein the at least one memory element is located on a first active layer of an integrated circuit and the adder is located on a second active layer of the integrated circuit different from the first layer, wherein the first active layer and the second active layer are connected using through-silicon vias (TSVs).
16. The system of claim 15, wherein the parallel to serial converter is located on the first integrated circuit and the serial to parallel converter is located on the second integrated circuit.
17. A method of generating an output signal, comprising:
receiving most significant bits and least significant bits as inputs at one or more memory elements;
using the most significant bits and the least significant bits as memory address locations to retrieve from the one or more memory elements a value of a component in a Taylor series expansion;
converting an output of the one or more memory elements to a serial bitstream output for transmission;
converting the serial bitstream output into a parallel bitstream output for processing; and
combining the parallel bitstream output from the one or more memory elements to form a signal output.
18. The method of claim 17, further comprising converting the signal output to an analog output signal.
19. The method of claim 18, further comprising low pass filtering the analog output signal.
20. The method of claim 17, further comprising buffering outputs of the one or more memory elements to provide the outputs to an adder at substantially the same time.